The PE8735 from Pasternack Enterprises Inc is a Tunable Filter with Frequency 200 to 400 MHz, Bandwidth 2 MHz, Rejection 40 dB @ 300 KHz, Input Power 50 W, Operating Temperature -55 to 85 Degree C. Tags: Benchtop, Module with Connectors, Mechanically Controlled. More details for PE8735 can be seen below.